Has Wenger got it wrong? Arguably. But I don't think he cheated anyone. That's a big accusation to make.

Merson was chased out of the door pretty quickly by Wenger as his wild ways certainly wouldn't have met with approval after the Frenchman took over at Arsenal.

Sadly, it also meant that Merson didn't fulfil his potential as a player and drops short of being a club legend as he's not held in the same affection as an Ian Wright, David Seaman or Lee Dixon.

Before Arsene: Merson during his time at Highbury - he'd last one year under Wenger (Image: Getty)

Where I think Merson is right is that Arsenal have dropped short in the market this summer and it's a difficult argument to justify saying, as Wenger often does, that players are too expensive when you are charging sky high ticket prices.

To me, the Welbeck injury is just bad luck. He has been out since April and has had several aborted attempts at a comeback because of his persistent knee injury.

I remember way back in May he was back in training, hoping to be on the bench at Old Trafford. Then his knee flared up again. That happened in pre-season and again last week.

Out of action: It will be months before Welbeck returns for the Gunners (Image: Getty)

A couple of us heard a whisper at the start of this week that he'd had a setback but all parties tried to keep it quiet until after the window had shut so as not to force prices up even more of potential targets.

The fact is they did enquire after strikers. But what's the point of bidding, as Merson says, £75million for Karim Benzema when Real Madrid have made it clear they won't sell?

Similarly, Paris Saint Germain didn't want to sell Edinson Cavani but might have been tempted at £50million. But can you justify paying that for a 28-year-old? And therein lies Merson's argument and it's a fair point.

That's what will upset the fans, especially if Arsenal don't mount a genuine title challenge this season.

Costly: PSG are asking a King's ransom for the Uruguayan (Image: PABLO PORCIUNCULA)

Edinson Cavani – PSG record

100

Games

59

Goals

If you charge big prices then it's difficult to argue against paying over the odds on big names.

If Cavani costs £10million more than his worth, then fans would argue it should be paid because they believe they are paying over the odds for tickets.

Arsenal have got the foundations of a title winning team in place, bought a brilliant keeper in Petr Cech - and then not put the roof on the house. It is bizarre.

I'm sympathetic to the argument on Benzema and Cavani. But I thought they should have signed Morgan Schneiderlin to compete or back up Francis Coquelin. He was definitely available, so why not? It will be a gamble on the raw but hugely promising Coquelin.

Up front, you are left with Theo Walcott and Olivier Giroud. Walcott missed Mesut Ozil's supply line at Newcastle, Giroud is going through a dry spell but is an under rated striker.

Beyond that, Arsenal don't have enough. Joel Campbell is interesting. Will he knuckle down, focus and scrap for a place which could be the making of his career? Or will he sulk about not being in the team? We'll soon see. He's got big potential.

Loaning out Chuba Akpom and Yaya Sanogo looks a bit short sighted now because Arsenal don't have enough reserves, especially with four competitions to go for this season.

Therefore, I can understand the frustration. But who was there, honestly? Who could improve the squad? Look at the ridicule Manchester United have invited by over paying for French youngster Anthony Martial.

Switch: Chuba Akpom has joined Hull on loan for first-team action (Image: Twitter/HullCity)

The answer: Would Austin have been worth a punt? (Image: Jordan Mansfield)

It does, however, throw up one question. Would Arsenal have gone for Charlie Austin had he been called Claudio Agustino? After all, Austin was prolific in the Premier League last season, scoring 18 goals for a struggling team.

Worth a punt? He's not exactly polished and isn't as quick or mobile as you would like, but if he can score 18 goals for QPR then why wouldn't he get more at Arsenal? Just a thought.

Arsenal have bought well in recent windows, spending big, shipping out deadwood and bringing in stellar names like Ozil and Alexis Sanchez.

This window has been underwhelming after the signing of Cech. Welbeck's injury and lengthy lay-off only highlights the issue.

But I do think it's very harsh to suggest they didn't try and also that they set out to cheat the fans.